Previous reports speculated that Delta and Matthew were planning to marry in Maui, Hawaii, but it seems that Byron Bay may have been better suited to the couple.

Special celebration? The outing comes after Delta set tongues wagging that she married her new boyfriend of one year, Matthew Copley, on New Year's Eve

In a video shared to Delta's Instagram on Thursday, the Voice Australia judge was serenaded by her rumoured new husband during a group singalong.

The couple, who debuted their romance in January last year, put on an affectionate display as they sang the lyrics to Kumbaya.

Matthew strummed his guitar as Delta burst into fits of laughter over his rather traditional choice of song.

She captioned the clip: 'Happy New Year, Love x'.

Before heading to Byron Bay, the happy couple are believed to have enjoyed a family gathering in Brisbane.

'They popped champagne at Eleven Rooftop Bar alongside Matt's younger brother Jon and some of their best mates,' Woman's Day reported.

Daily Mail Australia has contacted Delta Goodrem for comment.

New Year's Eve party or something more? Several photos shared to Instagram showed Delta partying in a bridal-inspired dress and floral crown, sparking rumours her New Year's Eve party doubled as a wedding